With nearly 40 years of legal practice, lawyer Abbe Lowell has represented many powerful people. Now he's starting a new law firm to represent those who have drawn the ire of President Trump.

The ruling from U.S. District Judge Beryl Howell is the first to permanently block an executive order issued by President Trump punishing a law firm for representing clients or causes he dislikes.

President Trump and the head of the law firm Paul, Weiss, Rifkind, Wharton & Garrison LLP have reached a deal under which Mr. Trump will drop the executive order he leveled against the firm, Mr ...